Police in the central province of Khanh Hoa want to charge a man with attempted murder after he allegedly set off a bomb outside a local police chief's house last year.

In their proposal to the provincial prosecutors' office, the People's Procuracy, charges of illegally making, keeping, transporting, using and trading explosives were also sought against Nguyen Viet Truong, 57, police said on Friday.

Truong was accused of detonating a self-made bomb in front of the house of Col. Tran Ngoc Khanh, director of Khanh Hoa's Police Department, on July 30 last year, in an attempt to kill him.

He allegedly set it off with a remote control device when Khanh was taking his motorbike out of the house.

The explosion caused no casualties, but shattered doors and windows in vicinity.

Truong was arrested the next day and a police raid on his house produced 30.4 kilograms of explosives and 475 detonators.

According to police, the explosion aimed to "paralyze" police investigations into property disputes between Truong's rock quarrying company, Song Ma, and the Ho Chi Minh City-based Kiet Viet Company.

A report on Phap Luat (Law) Vietnam website previously said that in 2003 the two companies cooperated on a project to exploit a rock mining site in Can Lam District, but four years later they became embroiled in a property dispute.

Truong filed complaints against Kiet Viet with Khanh Hoa's economic crimes division (PC15), accusing it of defrauding and depriving him of his properties.

But, PC15 concluded then that there was no sign of crime in the case and that it was a civic dispute.